S. 1642 (119th)Bill Overview

SEMI Investment Act

Taxation|Taxation
Cosponsors
Support
Bipartisan
Introduced
May 7, 2025
Discussions
Bill Text
Current stageCommittee

Read twice and referred to the Committee on Finance.

Introduced
Committee
Floor
President
Law
Congressional Activities
01 · The brief
Plain-English summaryWhat this bill actually does

Amends Internal Revenue Code section 48D to expand the advanced manufacturing investment credit to include facilities that manufacture semiconductor materials. It defines “semiconductor materials” as direct and indirect production materials (with enumerated examples), requires the Treasury Secretary (with Commerce) to publish and update a qualifying materials list within 180 days and annually, allows taxpayer petitions for determinations, excludes generic-use materials, and applies to property placed in service after enactment.

Why people may split

Progressives emphasize jobs, supply-chain resilience, and labor/environment safeguards

Watch point

Relative to its intended legislative type, this bill is a targeted substantive amendment to the tax code that is generally well-specified in definitional terms and assigns reasonable administrative implementation tasks, but it omits fiscal acknowledgment and leaves several procedural and definitional thresholds to executive regulation.

Amends Internal Revenue Code section 48D to expand the advanced manufacturing investment credit to include facilities that manufacture semiconductor materials.

It defines “semiconductor materials” as direct and indirect production materials (with enumerated examples), requires the Treasury Secretary (with Commerce) to publish and update a qualifying materials list within 180 days and annually, allows taxpayer petitions for determinations, excludes generic-use materials, and applies to property placed in service after enactment.

Passage40/100

Technically specific and potentially bipartisan but creates revenue loss and typically moves as part of larger packages rather than alone.

CredibilityAligned

Relative to its intended legislative type, this bill is a targeted substantive amendment to the tax code that is generally well-specified in definitional terms and assigns reasonable administrative implementation tasks, but it omits fiscal acknowledgment and leaves several procedural and definitional thresholds to executive regulation.

Contention55/100

Progressives emphasize jobs, supply-chain resilience, and labor/environment safeguards

02 · What it does

Who stands to gain, and who may push back.

Likely benefits vs burdens50% / 50%
Local governmentsFederal agencies · Taxpayers

These are examples from the analysis, not a ranked list of the most-affected groups.

Likely helped
  • Potential benefitEncourages domestic investment in semiconductor materials manufacturing by extending the investment credit eligibility.
  • Potential benefitMay attract capital expenditures and new manufacturing facilities producing specified materials.
  • Local governmentsCould strengthen semiconductor supply chain resilience by incentivizing local production of key materials.
Likely burdened
  • Federal agenciesExpands a tax expenditure, likely reducing federal revenue relative to baseline estimates.
  • Potential burdenMay disproportionately benefit large incumbents or non-domestic firms if location or ownership not restricted.
  • TaxpayersCreates additional administrative and compliance tasks for taxpayers and the Treasury Department.
03 · Why people split

Why the argument around this bill splits.

Progressives emphasize jobs, supply-chain resilience, and labor/environment safeguards
Progressive75%

Generally favorable because it supports domestic semiconductor supply chains, job creation, and industrial capacity.

Concerned about ensuring benefits reach workers and about environmental and public-health safeguards for chemical-intensive production.

Leans supportive
Centrist65%

Cautiously supportive: sees targeted tax incentives as practical for rebuilding supply chains, but wants clear definitions, fiscal offsets, and administrative clarity to prevent abuse and manage costs.

Split reaction
Conservative35%

Skeptical: values domestic semiconductor capacity and national security, but views expansion of tax credits as market distortion and corporate welfare that increases government intervention and complexity.

Likely resistant
04 · Can it pass?

The path through Congress.

Introduced

Reached or meaningfully advanced

Committee

Reached or meaningfully advanced

Floor

Still ahead

President

Still ahead

Law

Still ahead

Passage likelihood40/100

Technically specific and potentially bipartisan but creates revenue loss and typically moves as part of larger packages rather than alone.

Scope and complexity
52%
Scopemoderate
52%
Complexitymedium
Why this could stall
  • No official cost estimate or revenue impact in text
  • Whether offsets or pay-fors will be proposed
05 · Recent votes

Recent votes on the bill.

No vote history yet

The bill has not accumulated any surfaced votes yet.

06 · Go deeper

Go deeper than the headline read.

Included on this page

Progressives emphasize jobs, supply-chain resilience, and labor/environment safeguards

Technically specific and potentially bipartisan but creates revenue loss and typically moves as part of larger packages rather than alone.

Unlocked analysis

Relative to its intended legislative type, this bill is a targeted substantive amendment to the tax code that is generally well-specified in definitional terms and assigns reasonable administrative implementation tasks,…

Go beyond the headline summary with full stakeholder mapping, legislative design analysis, passage barriers, and lens-by-lens tradeoff breakdowns.

Perspective breakdownsPassage barriersLegislative design reviewStakeholder impact map
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